★ Butterfly Knife | Case Hardened
Banned in many jurisdictions due to the fan-like pivot action that enables near-instant blade deployment, the Butterfly Knife is a custom balisong design. This Covert version from the Operation Breakout Weapon Case carries the Case Hardened treatment, applied through color case-hardening using wood charcoal, which produces the signature irregular blue, gold, and silver tonal variations across the metal. Float range covers 0 to 1, and StatTrak variants are available.
Cheapest wear we have on this page. Pattern / float overpay is extra.
Operation Breakout Weapon Case: (case+key) ÷ drop chance. Average, not a promise.
Covert / missing collection peers: no contract estimate.
Price History & Performance
Price by Wear
Pattern guides: Case Hardened Blue Gem
Cases & Drop Odds for ★ Butterfly Knife | Case Hardened
Probability of unboxing this skin per single case open, expected number of opens until you get one, and the case's expected return based on the current market value of every skin inside.
| Case | Drop Chance | Expected Opens | Open Cost | Market EV | EV vs Cost |
|---|---|---|---|---|---|
 Operation Breakout Weapon Case | 0.0200% | 5,000 | $14.00 | $0.65 | -95.4% |
Drop chance = official rarity odds ÷ size of that rarity pool inside the case. Market EV is the probability-weighted average of every skin's lowest current listing. "EV vs Cost" compares that EV against the case + key price — negative means opening loses money on average.
Where to Buy ★ Butterfly Knife | Case Hardened
Similar Knife Skins
Community Reviews (0)
Sign in to leave a review and rate this skin.